I often use media9 to insert mp4s in my beamer presentations. However on OS X, it looks like only Adobe Reader can display them. Preview and Skim simply display a blank page
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rm -rf♦Apr 26 '13 at 1:41

I noticed that if I don't specify the video dimension, nothing shows up. Why is that?
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HawkApr 27 '13 at 17:42

@jak Do you mean in the LaTeX file? I know a lot about Plain TeX but little about LaTeX. It looks like the default size is 0pt x 0pt. (Put rules around it -- they show up as a dot.) You should ask on tex.stackexchange.com. Perhaps there's a way to automatically read the image size.
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Michael E2Apr 27 '13 at 21:25

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